Functions 键的用途 Types of keys 键的种类 Marking symbols 键的标记

Keys键 Functions 键的用途 Types of keys 键的种类 Marking symbols 键的标记 Drawing methods of key assemblies 键联接装配图的画法 Choosing a key and keyway dimensions 键的选取和键槽尺寸的确定请点击相应标题显示其内容

Functions键的用途 A key joint is a removable joint. It goes through the shaft and the hub’s keyway, joining the shaft with the rotors (gears, pulleys and clutch), and transferring torques. 键联接是一种可拆联接。这种联接是将键同时嵌入轴与轮毂的键槽中，将轴及轴上的转动零件如齿轮、带轮、联轴器等联接在一起，以传递转矩。在图片上点击鼠标左键“暂停”或再次“播放”

a) Parallel key b) Woodruff key c) Gib-head key 普通平键半圆键钩头楔键 GB/T 1096—2003 GB/T 1099—2003 GB/T 1565—2003 Types of keys键的种类 Frequently used keys are parallel keys, woodruff keys and gib-head keys . One should select appropriate keys according to their features during the design process. 常用的键有普通平键、半圆键和钩头楔键，设计时可根据其特点合理选用。

Marking symbols 键的标记 Key marks generally include 键的完整标记通式为:

Drawing methods of key assemblies 键联接装配图的画法 Key joint键联接 Parallel key joint Woodruff key joint Gib-head key joint 普通平键联接半圆键联接钩头楔键联接画图方法画图方法画图方法请点击下划线文字显示其内容

The parallel and woodruff keyway on the shaft is generally machined on a milling machine. 轴上的平键槽和半圆键槽在铣床上加工 The keyway on the hub is generally machined on a machine with a slotting cutter. 轮毂孔中的键槽用插刀在插床上加工 Choosing a key and keyway dimensions 键的选取和键槽尺寸的确定 The keyway on the hub is generally machined on a machine with a slotting cutter. 轮毂孔中的键槽用插刀在插床上加工

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Clearance between the top surfaces of both the key and the hub keyway should be maintained. 键的顶面与轮毂的键槽顶面之间, 应留有间隙 A A Parallel key joint普通平键联接 Parallel key joint of form AA型普通平键联接 If the cut is longitudinal, it is drawn without section hatching. 当沿键的纵向剖切时，按不剖画 A—A If the cut is cross sectional, hatching is required. 当沿着键的横向剖切时, 则要画剖面线 Generally, the depth of the keyway and its union with other components are conveyed by cutaway views. 通常用局部剖视图表示轴上键槽深度及与其他零件间的联接关系 Clearance between the key and the keyway is not allowed, and you should draw a line in accordance with the interface. 键与键槽侧面之间不留间隙, 应按接触面画一条线请点击鼠标左键显示后面内容

Clearance between the top surfaces of both the key and the hub keyway should be maintained. 键的顶面与轮毂的键槽顶面之间, 应留有间隙 A A Woodruff key joint半圆键联接 If the cut is longitudinal, it is drawn without section hatching. 当沿键的纵向剖切时，按不剖画 A—A If the cut is cross sectional, hatching is required. 当沿着键的横向剖切时, 则要画剖面线 Generally, the depth of the keyway and its union with other components are conveyed by cutaway views. 通常用局部剖视图表示轴上键槽深度及与其他零件间的联接关系 Clearance between the key and the keyway is not allowed, and you should draw a line in accordance with the interface. 键与键槽侧面之间不留间隙, 应按接触面画一条线请点击鼠标左键显示后面内容

Gib-head key钩头楔键联接 Since the top and bottom surfaces of the gib-head key are working faces, there is no clearance between them and the bottom of the keyway. 钩头楔键顶面和底面同为工作面, 与槽底没有间隙 The two sides of the key are not working faces. Clearance should be maintained between them and the wo sides of the keyway. 键的两侧为非工作面,与键槽两侧面应留有间隙

Parallel key joint 普通平键联接 在图片上点击鼠标左键可以“暂停”或再次“播放”

Woodruff key joint 半圆键联接 在图片上点击鼠标左键可以“暂停”或再次“播放”

Functions 键的用途 Types of keys 键的种类 Marking symbols 键的标记